A Review of Burr Formation in Machining

Abstract

One of the major concerns in deburring technology is centered on how to predict the size and shape of burrs to insure uniform removal and, if this is possible, how to design the process or product in advance to minimize or control the burr size. This paper reviews some of the research done over the past several years on this important topic. The paper includes a discussion of burrs in conventional machining, process planning for burr minimization as well as micromachining applications.

Investigation of correlation between interlayer gap and burr height in drilling of stacked Al-7475 materials

“…Hence, deburring is an essential process in high-precision component manufacture; about 30% of the total manufacturing costs is attributed to deburring, especially in aircraft wing-box and fuselage assembly. 3…”

Hole quality and burr reduction in drilling aluminium sheets

“…The costs associated with removing these burrs as a percentage of manufacturing cost varies up to 30 % for high precision components such as aircraft engines, etc. In automotive components, the total amount of deburring cost for a part of medium complexity is in the range of 15 to 20 % of the manufacturing expenses [1]. There are many papers dealing with different kinds of deburring processes, but these are costly, very time consuming, and non-value-adding operations [2].…”

Ultra-precision cutting of linear micro-groove array for distributed feedback laser devices

“…Therefore, the serious chip interaction was occurred before cutting zone of the tool rake face in the planing process, which led to the 'soft' PMMA material was torn off rather than cut off by edge of tool. Compared with known burr models (Gillespie, 1976;Dornfeld and Min, 2009), the burrs formatted on the side surfaces of grooves in the experiments were similar to the tear burr model. They were the result of material tearing from the workpiece rather than shearing.…”